Machine for making lath boards



S. M. FORD MACHINE FOR MAKING LATH BOARDS June 5, 1923. 1,457,654-

Filed De 15 1921 6 Sheets-Sheet 1 14' free/v5) June 5, 1923. 1,457,664

s. M. FORD MACHINE FOR MAKING LATH BOARDS Filed Dec. 15 1921 e Shets-Sheet 2 s. MQFORD June 5, 1923.

MACHINE FOR MAKING LATH BOARDS Filed Dec- 15. 1921 6 Sheets-Sheet 5 June 5, 1923. v 1,457,664

s. M. FORD MACHINE FOR MAKING LATH BOARDS Filed Dec. 15. 1921 6 Sheets-Sheet 4 flrralev/fr June 5, 1923. 1 1,457,664

S. M. FORD MACHINE FOR MAKING LATH BOARDS Filed D80. 15. 1921 6 Sheets-Sheet 5 jw/wrae I flair/7A3? June 5, 1923. 1,457,664

S. M. FORD v MACHINE FOR MAKING LATH BOARDS i a N .iiswwrae Jams-#1520 Patented June 5, 1%23.

PATENT V SILAS M. FORD, 013' ST. PAUL, MINNESOTA.

MACHINE FOR MAKING LATE BOARDS Application filed December 15, 1921.

To all whom it may concern:

'Be it known that I, SrLAs M. FORD, a citizen of the United States, and a resident of St. Paul, in the county of Ramsey and State 5 of Minnesota, have invented certain new and useful Im rovements in Machines for Making Lath oards, of which the following is a "ecification.

he main object of my invention is to provide positive means for bringing paper or other suitable material which has already been corrugated into more or less of a rectangular form into corrugations of a dovetailed shape.

Incidental objects are to provide means for gathering one corrugation at a time into a dovetailed shape, to provide means for keeping it in this shape, and during the process of passing thematerial through the machine form one .of more of such dovetail shaped corrugations at a time until finally a sheet of material will emerge from the machine, with all of the corrugations, which may have been rectangular or irregularly dovetailed shaped when the material entered the machine, in a symmetrical dovetailed sha e formation. v

ith these and other incidental objects in View the invention consists of certain novel features of construction and combination'of parts, the essential elements of which are hereinafter described with reference to the drawings which accompany this specification.

In the drawings, Figure 1 is a plan view Figure 7 is a plan view of the front end of the machine with the upper forming and athering means removed, showing merely t e lower part of the machine.

Serial No. 522,668.

'making lath boards, and the material as delivered by this machine can be used for passing the re-inforcing wires through the webs connecting the alternate lath like faces.

There have been many methods suggested for forming paper into dovetail shaped corrugations, and I have likewise devised numerous means for accomplishing this result.

However, when dealing with asphalt and impregnated felt products, the problem is extremely difficult on account of the enormous friction between the material and the means used in forming it.

For this reason I have found it advisable 8 to first form the paper into a substantially rectangular corrugation and then take the 0 central corrugation and form it into a dovetail shaped plait without disturbing the rest of the sheet. Then take the adjacent pair of corrugations and form them into dovetail shaped plaits and similarly draw each successive pair of rectangular corrugations into dovetail shaped plaits successively, rather than attempt to form all of the dovetail shaped plaits at one time.

As shown in Figure 9 the machine is built of a structural frame work and has two longitudinal angles, one at each side of the top of the frame work. Mounted on the angles are a plurality of castings 9, each of which contains two bearmgs.

A set of upper shafts 2, 3, and a plurality of upper shafts 4 as shown in Figures 1, 3, 7, 8 and 9 are mounted in the upper bearings carried by the castings 9, and a second set of similar shafts 2', 3 and a. plurality of shafts 4 are carried by the lowerbearings of the castings 9. 1

A longitudinal power shaft 5, Figure l,

adapted to be driven by any suitable means such as 6, drives the transverse shafts 2, 3 and 4 through the bevel gear pairs 7 and these shafts through the spur gear pairs 8 drive their co-operating shafts 2, 3 and 4 respectively.

The shafts 4 and 4 carry rollers 10 and 10 respectively, Figures 1, 3, 7, and 8.

A triangular shaped frame consisting of angles 11 and 12, Figure 1, is mounted above the upper set of rollers and from this frame is supported a plurality of T shaped guides 13 and 14. Transverse frame members 15 are supported by the upper triangular structure and these frame members carry a plurality of guide bars 16.

Likewise mounted on the triangular frame are transverse bars 17 which carry adjustment screws 18, Figures 11 and 12, provided for giving tilting adjustment of the forming fingers 19, which are mounted on the shafts 2, 3 and 4.

These forming fingers 19 are formed of sheet metal shaped as clearly shown in the drawing and mounted on the block 20.

Discs 21 are likewise supported from the blocks 20.

The shaft 2 carries a pressure collar 22 co-operating with a similar collar 22' directly below and mounted on the shaft 2. The shaft 3. has a collar 23 thereon and the shaft 3' likewise has a collar 23'.

The first three shafts 4 each carry two collars 24, while the similar shafts 4' below each carry similar collars 24, these col.- lars 24' being spaced between the collars 24 above.

The fourth one of the shafts 4 has two sets of forming'fingers mounted thereon and likewise four collars and the next three ofthe shafts 4 likewise have four collars thereon, while the shafts 4 directly thereunder and co-operating with this set of upper shafts each carry 3 collars in staggered relation with the four collars above.

It will be noted from Figures 1, 3, 7, and 8 that the shafts are arranged in groups and that each successive group has two more sets of collars thereon.

When a sheet of impregnated paper such as that shown in Figure 2 is fed into the machine from the left, asshown in Figure 1, the central corrugation at 25 is gripped between the collars 22 and 22'.

If the corrugated sheet is fed directly into the machine the forming fingers 19 engage with the central corrugation at points 26, and force it into a dovetailed shape,the rest of the sheet not being affected.

As the paper is fed farther in, the 'l' shaped guides 13 and 14 engage with the corrugations at 27 slightly drawing the paper between these points toward the center of the machine so the second set of forming fingers may engage with the cormemes rugations at 28 and 29, and thereby forcing these corrugations into a dovetailed shape.

The guide bars 16 ride in the corrugations to hel align them as they travel from roller to re ler and the collars on the various shafts likewise ride in these corrugations, the rollers 10 gently pressing the paper together and serving to move it forward through the machine.

The third set of forming fingers will engage the paper at 30 and so on through the machine, each set of guides 13 and 14 leading the proper pair of corrugations to the next sets of forming fingers, while the collars and guide bars keep the aper aligned and when the paper has nally passed through the machine, it emerges at the end in a dovetailed shape, as shown in Figure 10.

Where paper of a difiicult nature is being handled it may be advantageous to take the paper as it comes from this machine and pass it to a similar machine that increases the amount of angle to the corrugation, or in other words makes a complete product of a lesser thickness.

This may also, with some classes of material, be done by passing the material as it comes from this machine through a pair of pressure rollers, or the paper may be used as at is-delivered from this machine.

Claims:

'1. In a machine for making lath board the combination of means for positioning one corrugation of a sheet of corrugated material passing through the machine, means for changing the shape of said corrugation as it passes through the machine and means operating on said material after said first named means for changing the shape of a second corrugation of said sheet of material.

Q 2. In a machine for making lath board adapted to have passed therethrough a sheet of corrugated material with the corrugation paralleltojhe longitudinal axis of the machine, the combination with means for locating one of the corrugations of said sheet of material, of means for changing the shape of said corrugation; simultaneously acting means for changing the shape of each corrugation next adjacent to said first named corrugation, and additional simultaneously acting means, functioning after said last named means, for changing the shape of the two corrugations adjacent to said last named pair of corrugations.

3. In a machine for making lath board the combination of means for passing a sheet of -corrugated material through said machine with the corrugation thereof parallel to the longitudinal axis of the machine, of means for changing the shape of the central corrugation as it passes through the ma hin & P il of individual means menses functioning after said first named means for changing the shape of the corrugations positioned one on either side of said central corrugation and means in the machine for successively changing the shape of the two next adjacent corrugations of the material successively said machine having a suficient number of said means for acting upon each of the corrugations of the sheet.

4. In a machine for making lath board, the combination with a plurality of rollers for passing a sheet of corrugated material through the machine with the corrugations thereof running longitudinally of the machine, of a pair of forming fingers for acting on the central corrugation of the sheet, two pairs of forming fingers for acting on the two corrugations adjacent to the central corrugation of the sheet, and a plurality of such pairs of forming fingers for successively acting upon each of the corrugations of said sheet. I

5. In a machine for making lath board the combination with means for passing a sheet of corrugated material through the machine with the corrugations thereof running longitudinally of the machine, of means for forming the central corrugation into a dovetail shaped plait, means spaced longitudinally from said first forming means for forming the two corrugations adjacent to the central corrugations into dovetail shaped plaits, and a plurality of such means spaced longitudinally of the machine for successively forming a pair of corrugations into dovetail shaped plaits.

6. In a machine for making lath board the combination of a plurality of forming elements, the first of said formingelements being of such style that it will form a corrugation of a sheet of material into a dovetail shaped plait, and each of the remainder of said sets of forming elements being such that they will form a pair of corrugations of material passed through the machine into dovetail shaped plaits, such sets acting successively as the material passes through the machine.

7. In a machine for making lath board, the combination of a plurality of feeding rollers mounted transversely on the frame of the machine, means for driving said rollers, collars positioned on said rollers for riding in the depressions of the corrugations of a sheet of corrugated. material passing through the machine, forming fingers associated with said collars for forming a corrugation of material passin through the machine into dovetail shaped plaits.

8. In a machine for making lath board, the combination of a-plurality of feeding rollers mounted transversely on the frame of the machine, means for driving said rollers, collars positioned on said rollers for riding in the depressions of the. corrugations of a sheet of corrugated material passing through the machine, forming fingers associated with said collars for forming a corrugation of material passing through the machine into dovetail shaped plaits and means for positively leading the corrugationsto be formed to their proper formlng means.

9. In a machine formaking lath board the combination with a plurality-of feeding rollers, of means for driving said rollers, collars carried by said rollers and ada ted to ride in the de ressions of corrugatlons of material passe though the machine, forming fingers associated with said collars and adapted to form the corru tions of the material into dovetail shape plaits, guides for leading the corrugations to their individual forming means, and guide bars ositioned to ride in the corrugations to esp the material in alignment as it passes through the machine.

10. In a machine for making lath board a forming finger positioned in the machine so as to engage with a corrugation of a sheet of corrugated paper fed through the machine and force said corrugation into a dovetail shaped formation.

11. In a machine for making lath board a forming finger positioned in the machine so as to engage with a corrugation of a-sheet of corrugated paper fed through the machine and force said corrugation into a dove-- tail shaped formation, and a disc positioned adjacent to said forming finger and adapted to ride in the space between adjacent corrugations of the aper with the face of said disc parallel to the sheet of the 12. In a machine for making the combination of a plurality of pairs of therebetween with the corrugation of the material passing longitudinally through the machine and transversely across the surface of the rollers, means associated with the .up-

to the central corrugation, the next of w ich changes the shape of the next pair of corrugations symmetrically positioned with respectto said central corrugation and contlnuously in the same manner until all of the corrugations of the sheet of material so acted upon have had the'i shapes thereof chan ed.

liitboard '10s rollers adapted to pass corrugated material 14. The method of making lath board dove tail shaped plaits, third form the next comprising the successive operation on a pair symmetrical y positioned with respect sheet of corrugated material so as to first to the central corrugation into dovetail 10 form the central corrugation thereof into a shaped plaits, and so on until all of the cor- 5 dovetail shaped plait, second form the pair rugations have been successively formed into of corrugations symmetrically positioned dovetail shaped plaits. next to the central corrugation into a pair of SILAS M. FORD. 

